# NostrPulse DVM Activity Monitor

> NostrPulse DVM Activity Monitor is a paid API for AI agents from nostrpulse.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns a rolling-window breakdown of NIP-90 Data Vending Machine activity on Nostr, including request/response counts, unique customers, and unique providers per job kind.

## Facts

- Endpoint: GET https://nostrpulse.xyz/nostr/dvm-activity
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nostrpulse-xyz-959fee4d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1hZF4w3jSk4a5oP9WNgDy

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability nostrpulse-xyz-959fee4d
```

Example prompt: What's the NIP-90 DVM activity on Nostr looking like over the last 6 hours — how many requests and responses are going through, which job kinds are most active, and how many unique buyers and sellers are there?

## When to prefer this

Use this endpoint when you need real-time or near-real-time intelligence on NIP-90 Data Vending Machine activity on Nostr — particularly for tracking the agent-economy marketplace, understanding which AI/data job kinds are in demand, or identifying active DVM providers and customers. Prefer this over general Nostr endpoints when your focus is specifically on sats-denominated machine-to-machine service activity.

## Known failure modes

- Invalid window parameter (not one of 15m, 1h, 6h, 24h) returns a 400 error
- Payment not included or invalid x402 payment returns a 402 error
- No DVM activity in the requested window returns empty/zero counts
- Service temporarily unavailable if Nostr relay connectivity is degraded

## How this service works

Rolling index of NIP-90 Data Vending Machine activity on Nostr. Shows what AI/data services agents are paying each other for right now — the sats-denominated agent-economy leading indicator. Per-kind breakdown of requests, responses, unique customers, unique providers. Query ?window=15m|1h|6h|24h.

## Output

A per-kind breakdown of NIP-90 Data Vending Machine activity for the requested time window, including counts of requests, responses, unique customers, and unique providers — essentially a real-time pulse of the Nostr agent-economy marketplace denominated in sats.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "window": "1h"
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "window": {
       "enum": [
        "15m",
        "1h",
        "6h",
        "24h"
       ],
       "type": "string",
       "description": "Rolling time window. Default 1h."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nostrpulse-xyz-959fee4d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nostrpulse.xyz](https://www.zero.xyz/host/nostrpulse.xyz/llms.txt)